• Apr 13, 2008

At last week's dealer show in Las Vegas, a picture of Ford's upcoming 4.4-liter V8 diesel powerplant was leaked to the Internet... ouch. The new powerplant is hardly a secret (we were reporting the first hints of it in June 2006, and the legal issues surrounding the engine in June 2007), but this is the first time the public has seen a photo of the new diesel in its metallic flesh.

Designed to offer comparable acceleration to the current 5.4-liter gasoline Triton, the new engine should be rated at about 330 hp and 420 lb-ft of torque. Fuel economy is expected to be around 20% better than the gas-fed Triton. To meet tough emission standards, a NOx after-treatment called "aqueous urea" will be injected into the hot exhaust stream. While the additive cleans up the tailpipe exhaust, it will also be another fluid the consumer will have to maintain (Ford is promising the "urea tank" will only need replenishing during oil changes). Although it doesn't look very attractive sitting naked on a stand atop the garish hotel carpet, you had better get used to seeing this V8 around town. Ford is saying that after a debut in the F-150 midway through the 2010 model year, we can expect the engine to follow in the Expedition, Navigator, E-Series vans, and F-Series SuperDuty.


[Source: F150online via Pickuptruck.com]



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    • 1 Second Ago
  • 40 Comments
      • 6 Years Ago
      "it will also be another fluid the consumer will have to maintain"

      This isn't just Ford. Every new diesel from every manufacturer is getting some form of this system.
        • 6 Years Ago
        "it will also be another fluid the consumer will have to maintain"

        Seriously, you just dump more in. The dealer does it for you, even.

        Nobody changes their own oil anymore anyway. No way an average consumer would even know about this.
        • 6 Years Ago
        Some new diesels don't require urea to reduce NOx. The Dodge Ram's new 6.7-liter Cummins exhaust system uses an "adsorber" catalyst made from precious metals (like a catalytic converter) instead of urea. Upside is no refills - it's almost maintenance free. Downside is the metals (platinum, paladium, rhodium) can rapidly change in price.
      • 6 Years Ago
      It will be intersting to see how many consumers will pay the additional $X,000 to purchase the diesel and are then surprised at the cost to replace the "aqueous urea" at every oil change, the 35-40% more they pay for diesel fuel, all in the name of gaining 20% better mileage. There are obvious torque advantages, but most people don't fully utilize the power of the Triton as it is.
        • 6 Years Ago
        Nicely said. Agree 100%
      james carter
      • 6 Years Ago
      if ive got this stright new ford diesel with more maintance costs higher fuel costs diesel now 4.10 o 4.50 gal.reg gas 3.35 also are they going to use better transmission the one they use now is junk. next are they going to use same design as currant v8 diesels 6.0 and 6.4? hope not they are junk short life motors.ford cannot build truck that doesnt burn your garage down now if you want real diesel go to dodge.
      • 6 Years Ago
      Why do diesel pickups still stink so much? I thought that problem was supposed to be solved.
        • 6 Years Ago
        Thanks for the carcinogenic particulates, HotRodz.
        HotRodzNKustoms
        • 6 Years Ago
        Well being among those in crazy diesel tuning land my truck smelled like propane when it was stock reprogrammed the computer and did some exhaust work and now it smells like a old diesel and blows black smoke like a big rig but boy does it go like a bat out of hell.
        • 6 Years Ago
        As much as mazdamia's comment was supposed to be snarky, it has merit in many cases. It's popular sport here in PickupLand to modify diesel pickups so they dump more fuel than designed, creating big stinking sooty clouds along with a little more power and a lot more noise. This is often accompanied with the installation of truckNuts.
        • 6 Years Ago
        Nice use of literary imagery, HotRodz. I give you an A+

        LOL

        But I gotta ding your grade down for killing my children's children's environment. :D So... B-
        • 6 Years Ago
        Aren't we all guilty here? Does anyone here ride a bicycle everywhere unless there is an emergency? I'm treading carefully here but doesn't picking on HotRod automatically contain a wee bit of hypocrisy?

        With that said, I'd still like to re-channel the exhaust of every old smelly diesel back into the cabin so the person who dealt it can "smell-t" it. Sort of speak!
        • 5 Years Ago
        Stink?! That's perfume, son.
      • 6 Years Ago
      that torque number seems a little bit to low...

      The Audi 4.2l V8 diesel produce 326hp and 750Nm(553ft.lbs) and this engine is avaible since some years..
        • 6 Years Ago
        What if it is actually low?

        It seems as if Ford went with power for this engine, while GM is going torque with their 4.5 V8. (expected 315hp, 525ft-lbs)
        Twin-turbo vs. mono-turbo

        What kind of transmission, please tell me something bigger/better than the ZF 6hp28, considering that it is supposed to be a 2010.5 model.
      • 6 Years Ago
      To get consumers to remember to top up the urea tank each time the truck gets sent for servicing is a huge chore. Further more i am not sure whether my mechanic has ready supplies of urea. Whatever it is, i am really not keen on worrying about whether there is sufficient urea whenever we drive out of town. EE3 Spark Plugs
        • 6 Years Ago
        Nope, it won't be hard maintain. First, the engine computer will throw a code if the urea tank needs to be refilled. Second, it will only need to be refilled once a year, when you change the oil. Third, dealerships will have the urea in stock -- it will come from Ford just like the rest of the "parts".

        Once a year, when you bring the truck in for regular service, while the mechanic tops up the fluids under the hood, he will top off one more container. I can not understand why people think this will be such a big deal.
        • 6 Years Ago
        The computer will be tied very closely to the Urea level as it is an emissions system (!!). The sad truth is that because the U.S. decided to adopt ultra strict diesel emissions levels, this sort of thing will become more common. We finally got the good diesel fuel, but tighter emissions levels along with it. If an extremely high amount of technology is put into the motor the reliance on the after treatment systems can be minimized.....unfortunately that means an expensive motor! No win situation unfortunately.
      • 6 Years Ago
      So the Urea is injected into the exhaust, which means it doesn't affect the engine at all? If thats true, I would just never fill up that tank. Maybe if your emissions had to be checked you could throw some juice in there, but the rest of the time it's just nonsense.
      • 6 Years Ago
      Ah yes, we need more engines that burn expensive diesel. We don't burn enough already.
      • 6 Years Ago
      Scott,

      Imagine small diesels in the Town Car, Grand Marquis, and Crown Victoria. Good mpg and higher hp! I'd love to see an option like this in all large American sedans, it would give us more choice than Mercedes.

      I hope Dodge and Ford actually build some small diesels in the half-ton market, hell I'd be interested in small non-turbo diesels making about the same hp as the big 3s truck V6s, the mpg would be insane and great for us guys who only need the truck to haul cargo not pull a freaking 5th wheel or horse trailer.
      • 6 Years Ago
      So just how much am I going to have to pay bubba at the corner garage to pee in the tank anyway? Are we going to have the option of buying premium urea? Will my vehicle run faster if I buy Mark McGwire urea or will it cause my vehicle to develop roid rage? My biggest fear is driving behind one of these. Getting stuck in traffic behind a big truck that smells like it's taking a piss everytime they hit the gas. Maybe they will come up with Fecal filters to reduce emissions further.
      • 6 Years Ago
      The Honda NOx trap is not that great a solution for reducing NOx emissions on diesel engines in the US.

      Unfortunately, the US06 emissions drive cycle for US Tier 2 Bin 5 emissions legislation (2010 or thereabouts) requires the vehicle to perform accelerations that are signaficantly outside the normal calibrated emissions window.

      In simple terms, this means that the high loads on the engine result in very high NOx emissions which can only realistically be soaked up by UREA based catalyst.

      If you decide to go down the NOx trap route for applications such as these, you are required to calibrate 4 different operational combustion modes for the engine:

      1. Normal Mode - this is your normal diesel combustion mode, but with slightly higher EGR rates to promote cooler combustion and lower your NOx emissions.

      2. Diesel Particulate Filter (DPF) Regeneration Mode - in this mode you are required to raise the temperature of the exhaust gas to around 600 to 700 degC to oxidize the soot collected in the particulate filter for a period of about 10 mins every 400 miles (depending on vehicle application and the size of DPF)

      3. NOx trap regeneration mode - this requires the engine to run in a rich combustion mode approximately every 500 seconds to clean out the NOx trap (seriously hurts your fuel economy).

      4. De-sulphurisation mode - this final combustion mode requires the high exhaust gas temperatures seen in the DPF regeneration mode, but it may be required more often than the DPF regeneration mode depending on the sulphur content of the fuel being used.

      In summary, having a NOx trap is not only a pain in the proverbial backside for the enigneers to calibrate, but is also going to kill the fuel economy and ruin the driveability of the engine...

      Personally, I would take the UREA NOx Catalyst for simplicity and be willing to sacrifice the occasional stop off at the dealership. Besides, my local mercedes dealership has a good coffee machine too.
      • 6 Years Ago
      Ford need to look at putting this engine into a large car as well. Hope they follow Audi's lead and do something sensible.
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